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Product Information Packet
ECP844252T-4 250HP,3570RPM,3PH,60HZ,449TS,A44128M,TEF
Copyright © All product information within this document is subject to Baldor Electric Company copyright © protection, unless otherwise noted.
Page 2 of 45
Product Information Packet: ECP844252T-4 - 250HP,3570RPM,3PH,60HZ,449TS,A44128M,TEF
Part DetailRevision: J Status: PRD/A Change #: Proprietary: No
Type: AC Prod. Type: A44128M Elec. Spec: A44WG1505 CD Diagram:
Enclosure: TEFC Mfg Plant: Mech. Spec: Layout:
Frame: 449TS Mounting: F1 Poles: 02 Created Date: 10-19-2010
Base: Rotation: PS Insulation: F Eff. Date: 02-03-2012
Leads: 3#2/0 (02 per group) Literature: Elec. Diagram: Replaced By:
Nameplate 000613007ETCAT NO ECP844252T-4 SPEC NO. P44G3768
HP 250 AMPS 266 VOLTS 460 DESIGN B
FRAME SIZE 449TS RPM 3570 HZ 60 AMB 40 SF 1.15
D.E. BRG. 65BC03J30X PH 3 DUTY CONT INSUL.CLASS F
O.D.E. BRG. 65BC03J30X TYPE P ENCL TEFC CODE G
D.E.BRG.DATA 6313 POWER FACTOR 91.2 NEMA-NOM-EFFICIENCY 96.2
O.D.E.BRG.DATA 6313 MAX CORR KVAR 23.0 GUARANTEED EFFICIENCY 95.8
3/4 LOAD EFF. 96.6 NEMA NOM/CSA QUOTED EFF
SER.NO. MOTOR WEIGHT
Page 3 of 45
Product Information Packet: ECP844252T-4 - 250HP,3570RPM,3PH,60HZ,449TS,A44128M,TEF
Nameplate 000613007EXCAT NO ECP844252T-4 SPEC NO. P44G3768
NO. ROTOR BARS 40 GREASE TYPE POLYREX EM
NO. SLOTS 48 IEEE 85 NOISE LEVEL 86DBA
5 YEAR WARRANTY MFG. DATE
NL AMPS AT RATED VOLTAGE 42.4 WINDING RES @25 C .01178 OHMS
SER.NO
Page 4 of 45
Product Information Packet: ECP844252T-4 - 250HP,3570RPM,3PH,60HZ,449TS,A44128M,TEF
Nameplate 000692000UJTCODE T2D TEMP 215 CL I DIV 2 GR ABCD
CL.1,ZONE 2,GR IIAIIBIIC CL II DIV 2 GR X X X
MOTOR I.D. NO. P44G3768
Page 5 of 45
Product Information Packet: ECP844252T-4 - 250HP,3570RPM,3PH,60HZ,449TS,A44128M,TEF
Parts ListPart Number Description QuantitySA209242 SA P44G3768 1.000 EARA196504 RA P44G3768 1.000 EA613-6PU N/P (RELEASE QTY 10,000) 1.000 EA000613007ET N/P BALDOR 1.000 EA000613007EX N/P BALDOR 1.000 EA000692000FF N/P (RELEASE QTY 1,000) 1.000 EA000692000JP N/P (RELEASE QTY 1200) 1.000 EA000692000UJ N/P 1.000 EA000692000VD N/P (REL QTY 4000) 1.000 EA000692000VH N/P (RELEASE QTY 500) 1.000 EA004824015A GREASE POLYREX EM 0.544 LB032018008CK HHCS 3/8-16X1L PLATED 4.000 EA032018020FK HHCS 3/4-10X2-1/2 PLTD. 4.000 EA032018028CK HHCS 3/8-16X3-1/2 PLTD. 3.000 EA032620016LA SOCKET SET SCREW-449 3.000 EA034017014AB LCKW 3/8 STD. PLATED 4.000 EA034180014DA KEY 1/4X1/4X1-3/4 L 1.000 EA034530072AB P/NIP 1/8X9"L GALV. 1.000 EA034530072BB PIPE NIPPLE,DE - 440-BS 1.000 EA034600001AA BUSH 1/4TO1/8 BLACK 1.000 EA034630002AB CPLG 1/4" PLATED 1.000 EA034690005AB PPLG 3/4 PLATED 2.000 EA035000001G GITS GRS CUP,ODE 1.000 EA083199082RA G28 FAN COVER W/BAFFLE ASSY 83199-82A 1.000 EA
Page 6 of 45
Product Information Packet: ECP844252T-4 - 250HP,3570RPM,3PH,60HZ,449TS,A44128M,TEF
Parts List (continued)Part Number Description Quantity089490097C BRKT,DE 1.000 EA412118006A DRAIN 1.000 EA415028021E SEAL 1.000 EA415096002A CPLG 1/8 HEX TYPE 1.000 EA423709011C WASHER 3.000 EA415028021E SEAL 1.000 EA415096002A CPLG 1/8 HEX TYPE 1.000 EA423709011C WASHER 3.000 EA415072001B CLAMP 1.000 EA702623011RA G28 AIR DEFLECTOR DRIVE END 1.000 EA702623012R THERM BAR, G28 70263-12A 1.000 EA410700004F WSHR 1.000 EA412118006A DRAIN 1.000 EA702675001D FAN 250-440 1.000 EA032018004BK HHCS 5/16-18X1/2 PLATED 3.000 EA032018006BK HHCS 5/16-18X3/4 PLATED 3.000 EA032018020FK HHCS 3/4-10X2-1/2 PLTD. 4.000 EA032018028CK HHCS 3/8-16X3-1/2 PLTD. 3.000 EA034017013AB LCKW 5/16 STD. PLATED 3.000 EA034530072AB P/NIP 1/8X9"L GALV. 1.000 EA034530072BB PIPE NIPPLE,DE - 440-BS 1.000 EA034600001AA BUSH 1/4TO1/8 BLACK 1.000 EA034630002AB CPLG 1/4" PLATED 1.000 EA035000001G GITS GRS CUP,ODE 1.000 EA
Page 7 of 45
Product Information Packet: ECP844252T-4 - 250HP,3570RPM,3PH,60HZ,449TS,A44128M,TEF
Parts List (continued)Part Number Description Quantity089490097C BRKT,DE 1.000 EA032018008BK HHCS 5/16-18X1L PLATED 4.000 EA032018008DK HHCS 1/2-13X1 PLATED 4.000 EA032130014DB HSHCS1/2-13X1-3/4 PLATE 4.000 EA033512004LB HHTTS 1/4-20X1/2 PLTD. 1.000 EA034000016AB WSHR .531ID 1.062OD .095 4.000 EA035000001A ALFTG 1/8" 1610-BL 1.000 EA035000001A ALFTG 1/8" 1610-BL 1.000 EA067053014A GASK 440 1.000 EA076870000B +CBCST BLKT - 440 1.000 EA076871000A +CBOX CVR BLKT - 449 1.000 EA406056007A TERBD 440 1.000 EA406099000A PLUG - FAN COVER 320-440 1.000 EA415000003D T/LUG 897-777 KPA25/G16 1.000 EA415030115A G28 C/BOX 415030114WCA 1.000 EA418150003A GREASE FITTING CAP 1.000 EA033775004EA DRSCR #6-1/4 304 S.S. 2.000 EA418150003A GREASE FITTING CAP 1.000 EA034180024HA KEY 5/8X5/8X3 L 1.000 EA004824003AJD WILKO 778.50 BLUE GREEN - 55 GAL DRUMS 0.375 GA004824003CBP WILKO 060.06B - ACTIVATR - 5 GA. 0.094 GA482403004AZZ ROTOR/STATOR PAINT 0.094 GA421948051 LABEL, MYLAR 1.000 EA415039027A GASKET, G28 LEAD THROAT 2.000 EA
Page 8 of 45
Product Information Packet: ECP844252T-4 - 250HP,3570RPM,3PH,60HZ,449TS,A44128M,TEF
449TS
250
P
3/60
3570
460
266
CONT
40/F
1.15
B
G
TEFC
833200
418143-3SE
---
---
.0117
0
46.6
3600
6.30
0
62.5
88.0
3593
70.3
94.6
125
142
3585
85.8
96.4
187
202
3578
89.9
96.6
250
266
3570
91.2
96.4
312
334
3561
91.2
96.0
LB.-FT.
0
156
575
1767
1620
139
510
1625
3465
270
991
870
3570
100
367
266
460. VOLT
TYPICAL DATA
NEMA NOM. EFF. - 96.2%
GUAR. MIN. EFF. - 95.8%
J.J.HARRISON
W.L.SMITH
A44WG1505-R001
W.L.SMITH
08/04/10
12/18/10
Printed on 12/18/10 6:18 @ psecs-motoreng
REL.
S.O.
FRAME
HP
TYPE
PHASE/
HERTZ
RPM
VOLTS
AMPS
DUTY
AMBC/
INSUL.
S.F.
NEMA
DESIGN
CODE
LETTER
ENCL.
E/S
ROTOR
TEST
S.O.
TEST
DATE
STATOR RES.@25
COHMS (BETWEEN LINES)
PERFORMANCE
LOAD
HP
AMPERES
RPM
%POWER FACTOR
%EFFICIENCY
NO LOAD
1/4
2/4
3/4
4/4
5/4
SPEED TORQUE
RPM
TORQUE
% FULL LOAD
TORQUE
AMPERES
LOCKED ROTOR
PULL UP
BREAKDOWN
FULL LOAD
AMPERES SHOWN FOR
CONNECTION. IF OTHER VOLTAGE CONNECTIONS ARE AVAILABLE, THE
AMPERES WILL VARY INVERSELY WITH THE RATED VOLTAGE
REMARKS:
DR. BY
CK. BY
APP. BY
DATE
A-C MOTOR
PERFORMANCE
DATA
ISSUE DATE
Rotext2(0)
Page 9 of 45
Product Information Packet: ECP844252T-4 - 250HP,3570RPM,3PH,60HZ,449TS,A44128M,TEF
3570
1.15
418143-3SE
449TS
460
BTYPICAL DATA
250
266
G---
PCONT
TEFC
.0117
3/60
40/F
833200
Printed on 12/18/10 6:18 @ psecs-motoreng
REL S.O.
FRAME
HP
TYPE
PHASE/HERTZ
RPM
VOLTS
AMPS
DUTY
AMBC/INSUL
S.F.
NEMA DESIGN
CODE LETTER
ENCLOSURE
E/S
ROTOR
TEST S.O.
TEST DATE
STATOR RES.@ 25
C
OHMS (BETWEEN LINES)
A-C MOTOR
PERFORMANCE
CURVES
DR. BY
CK. BY
APP. BY
DATE
ISSUE DATE
AMPERES SHOWN FOR
AMPERES WILL VARY INVERSELY WITH THE RATED VOLTAGE.
CONNECTION, IF OTHER VOLTAGE CONNECTIONS ARE AVAILABLE, THE
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Page 10 of 45
Product Information Packet: ECP844252T-4 - 250HP,3570RPM,3PH,60HZ,449TS,A44128M,TEF
3570
1.15
418143-3SE
449TS
460
BTYPICAL DATA
250
266
G---
PCONT
TEFC
.0117
3/60
40/F
833200
Printed on 12/18/10 6:18 @ psecs-motoreng
REL. S.O.
FRAME
HP
TYPE
PHASE/HERTZ
RPM
VOLTS
AMPS
DUTY
AMBC/INSUL
S.F.
NEMA DESIGN
CODE LETTER
ENCLOSURE
E/S
ROTOR
TEST S.O.
TEST DATE
STATOR RES.@ 25
C
OHMS (BETWEEN LINES)
A-C MOTOR
PERFORMANCE
CURVES
REMARKS:
DR. BY
CK. BY
APP. BY
DATE
ISSUE DATE
AMPERES SHOWN FOR
AMPERES WILL VARY INVERSELY WITH THE RATED VOLTAGE.
VOLT CONNECTION, IF OTHER VOLTAGE CONNECTIONS ARE AVAILABLE, THE
1 2 3 4 5 6 7 8 91 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 910
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Page 11 of 45
Product Information Packet: ECP844252T-4 - 250HP,3570RPM,3PH,60HZ,449TS,A44128M,TEF
Page 12 of 45
Product Information Packet: ECP844252T-4 - 250HP,3570RPM,3PH,60HZ,449TS,A44128M,TEF
Page 13 of 45
Product Information Packet: ECP844252T-4 - 250HP,3570RPM,3PH,60HZ,449TS,A44128M,TEF
Integ
ral Ho
rsepo
wer
AC
Ind
uctio
n M
oto
rsO
DP, W
PI E
nclo
sures
TE
NV, T
EA
O, T
EF
C E
nclo
sure
Exp
losio
n P
roo
f
Installatio
n &
Op
erating
Man
ual
3/09M
N408
Page 14 of 45
Product Information Packet: ECP844252T-4 - 250HP,3570RPM,3PH,60HZ,449TS,A44128M,TEF
Any tradem
arks used in this manual are the property of their respective ow
ners.
Page 15 of 45
Product Information Packet: ECP844252T-4 - 250HP,3570RPM,3PH,60HZ,449TS,A44128M,TEF
Table o
f Co
nten
ts
Table of Contents i
MN
408
Sectio
n 1
Gen
eral Info
rmatio
n1−
1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Overview
1−1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Lim
ited Warranty
1−1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S
afety Notice
1−1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . R
eceiving1−
2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage
1−2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E
xtended Storage
1−3
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . G
reater than 6 months
1−3
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . G
reater than 18 months
1−3
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . U
npacking1−
4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Handling
1−4
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S
ection
2In
stallation
& O
peratio
n2−
1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Overview
2−1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Location
2−1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M
ounting2−
1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fram
e Mounting H
oles2−
2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Alignm
ent2−
2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dow
eling & B
olting2−
3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Guarding
2−3
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P
ower C
onnection2−
3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Grounding
2−3
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C
onduit Box
2−3
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A
C P
ower
2−4
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . R
otation2−
4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connection D
iagrams
2−5
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F
irst Time S
tart Up
2−7
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Initial Lubrication
2−8
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Test for G
eneral Condition
2−8
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C
oupled Start U
p2−
8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Jogging and Repeated S
tarts2−
8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Heating
2−8
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . H
azardous Locations2−
8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Selection
2−8
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P
rotection Concepts
2−8
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Repair of M
otors used in Hazardous Locations
2−10
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sectio
n 3
Main
tenan
ce & Tro
ub
lesho
otin
g3−
1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General Inspection
3−1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . R
elubrication & B
earings3−
1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Type of Grease
3−1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . R
elubrication Intervals3−
2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Relubrication P
rocedure3−
4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting Chart
3−5
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S
uggested bearing and winding R
TD
setting guidelines for Non−
Hazardous Locations O
NLY
3−6
. . . . . . . . . . . .
Page 16 of 45
Product Information Packet: ECP844252T-4 - 250HP,3570RPM,3PH,60HZ,449TS,A44128M,TEF
Sectio
n 1
Gen
eral Info
rmatio
n
ii Table of Contents
MN
408
Page 17 of 45
Product Information Packet: ECP844252T-4 - 250HP,3570RPM,3PH,60HZ,449TS,A44128M,TEF
Sectio
n 1
Gen
eral Info
rmatio
n
General Inform
ation 1−1
MN
408
Overview
This m
anual contains general procedures that apply to Baldor M
otor products. Be sure to read and
understand the Safety N
otice statements in this m
anual. For your protection, do not install, operate or
attempt to perform
maintenance procedures until you understand the W
arnin
g an
d C
autio
n statem
ents. A
Warn
ing
statement indicates a possible unsafe condition that can cause harm
to personnel. A
Cau
tion
statement indicates a condition that can cause dam
age to equipment.
Imp
ortan
t:T
his in
structio
n m
anu
al is no
t inten
ded
to in
clud
e a com
preh
ensive listin
g o
f all details fo
r allp
roced
ures req
uired
for in
stallation
, op
eration
and
main
tenan
ce. Th
is man
ual d
escribes g
eneral
gu
idelin
es that ap
ply to
mo
st of th
e mo
tor p
rod
ucts sh
ipp
ed b
y Bald
or. If yo
u h
ave a qu
estion
abo
ut a p
roced
ure o
r are un
certain ab
ou
t any d
etail, Do
No
t Pro
ceed. P
lease con
tact you
r Bald
or
distrib
uto
r for m
ore in
form
ation
or clarificatio
n.
Before you install, operate or perform
maintenance, becom
e familiar w
ith the following:
�N
EM
A P
ublication MG
-2, Safety S
tandard for Construction and guide
for Selection, Installation and U
se of Electric M
otors and Generators.
�IE
C 34−
1 Electrical and IE
C72−
1 Mechanical specifications
�A
NS
I C51.5, the N
ational Electrical C
ode (NE
C) and local codes and practices.
Lim
ited W
arranty
ww
w.baldor.com
/support/warranty_standard.asp
Safety N
otice
:T
his equipment contains high voltage! E
lectrical shock can cause serious or fatal injury. Only
qualified personnel should attempt installation, operation and m
aintenance of electrical equipment.
Be sure that you are com
pletely familiar w
ith NE
MA
publication MG
-2, safety standards for constructionand guide for selection, installation and use of electric m
otors and generators, the National E
lectricalC
ode and local codes and practices. Unsafe installation or use can cause conditions that lead to serious
or fatal injury. Only qualified personnel should attem
pt the installation, operation and maintenance of this
equipment.
WA
RN
ING
:D
o n
ot to
uch
electrical con
nectio
ns b
efore yo
u first en
sure th
at po
wer h
as been
disco
nn
ected.
Electrical sh
ock can
cause serio
us o
r fatal inju
ry. On
ly qu
alified p
erson
nel sh
ou
ld attem
pt th
ein
stallation
, op
eration
and
main
tenan
ce of th
is equ
ipm
ent.
WA
RN
ING
:D
iscon
nect all electrical p
ow
er from
the m
oto
r win
din
gs an
d accesso
ry devices b
efore
disassem
bly o
f the m
oto
r. Electrical sh
ock can
cause serio
us o
r fatal inju
ry.W
AR
NIN
G:
Be su
re the system
is pro
perly g
rou
nd
ed b
efore ap
plyin
g p
ow
er. Do
no
t app
ly AC
po
wer b
efore
you
ensu
re that all g
rou
nd
ing
instru
ction
s have b
een fo
llow
ed. E
lectrical sho
ck can cau
seserio
us o
r fatal inju
ry. Natio
nal E
lectrical Co
de an
d L
ocal co
des m
ust b
e carefully fo
llow
ed.
WA
RN
ING
:A
void
extend
ed exp
osu
re to m
achin
ery with
hig
h n
oise levels. B
e sure to
wear ear p
rotective
devices to
redu
ce harm
ful effects to
you
r hearin
g.
WA
RN
ING
:S
urface tem
peratu
res of m
oto
r enclo
sures m
ay reach tem
peratu
res wh
ich can
cause d
iscom
fort
or in
jury to
perso
nn
el acciden
tally com
ing
into
con
tact with
ho
t surfaces. W
hen
installin
g,
pro
tection
sho
uld
be p
rovid
ed b
y the u
ser to p
rotect ag
ainst accid
ental co
ntact w
ith h
ot su
rfaces.F
ailure to
ob
serve this p
recautio
n co
uld
result in
bo
dily in
jury.
WA
RN
ING
:T
his eq
uip
men
t may b
e con
nected
to o
ther m
achin
ery that h
as rotatin
g p
arts or p
arts that are
driven
by th
is equ
ipm
ent. Im
pro
per u
se can cau
se seriou
s or fatal in
jury. O
nly q
ualified
perso
nn
el sho
uld
attemp
t to in
stall op
erate or m
aintain
this eq
uip
men
t.W
AR
NIN
G:
Do
no
t by-p
ass or d
isable p
rotective d
evices or safety g
uard
s. Safety featu
res are desig
ned
top
revent d
amag
e to p
erson
nel o
r equ
ipm
ent. T
hese d
evices can o
nly p
rovid
e pro
tection
if they
remain
op
erative.W
AR
NIN
G:
Avo
id th
e use o
f auto
matic reset d
evices if the au
tom
atic restarting
of eq
uip
men
t can b
eh
azardo
us to
perso
nn
el or eq
uip
men
t.W
AR
NIN
G:
Be su
re the lo
ad is p
rop
erly cou
pled
to th
e mo
tor sh
aft befo
re app
lying
po
wer. T
he sh
aft keym
ust b
e fully cap
tive by th
e load
device. Im
pro
per co
up
ling
can cau
se harm
to p
erson
nel o
req
uip
men
t if the lo
ad d
ecou
ples fro
m th
e shaft d
urin
g o
peratio
n.
WA
RN
ING
:U
L L
isted m
oto
rs mu
st on
ly be serviced
by U
L A
pp
roved
Au
tho
rized B
aldo
r Service C
enters if
these m
oto
rs are to b
e return
ed to
a hazard
ou
s and
/or exp
losive atm
osp
here.
WA
RN
ING
:T
herm
ostat co
ntacts au
tom
atically reset wh
en th
e mo
tor h
as sligh
tly coo
led d
ow
n. To
preven
tin
jury o
r dam
age, th
e con
trol circu
it sho
uld
be d
esign
ed so
that au
tom
atic starting
of th
e mo
tor is
no
t po
ssible w
hen
the th
ermo
stat resets.
Page 18 of 45
Product Information Packet: ECP844252T-4 - 250HP,3570RPM,3PH,60HZ,449TS,A44128M,TEF
Section 1
General Inform
ation
1−2 G
eneral Information
MN
408
Safety N
otice C
ontinuedW
AR
NIN
G:
Use p
rop
er care and
pro
cedu
res that are safe d
urin
g h
and
ling
, lifting
, installin
g, o
peratin
g an
dm
aintain
ing
op
eration
s. Imp
rop
er meth
od
s may cau
se mu
scle strain o
r oth
er harm
.W
AR
NIN
G:
Pacem
aker dan
ger − M
agn
etic and
electrom
agn
etic fields in
the vicin
ity of cu
rrent carryin
gcarryin
g co
nd
ucto
rs and
perm
anen
t mag
net m
oto
rs can resu
lt result in
a seriou
s health
hazard
top
erson
s with
cardiac p
acemakers, m
etal imp
lants, an
d h
earing
aids. To
avoid
risk, stay way fro
mth
e area surro
un
din
g a p
erman
ent m
agn
et mo
tor.
WA
RN
ING
:B
efore p
erform
ing
any m
oto
r main
tenan
ce pro
cedu
re, be su
re that th
e equ
ipm
ent co
nn
ected to
the m
oto
r shaft can
no
t cause sh
aft rotatio
n. If th
e load
can cau
se shaft ro
tation
, disco
nn
ect the
load
from
the m
oto
r shaft b
efore m
ainten
ance is p
erform
ed. U
nexp
ected m
echan
ical rotatio
n o
fth
e mo
tor p
arts can cau
se inju
ry or m
oto
r dam
age.
WA
RN
ING
:D
o n
ot u
se no
n U
L/C
SA
listed exp
losio
n p
roo
f mo
tors in
the p
resence o
f flamm
able o
rco
mb
ustib
le vapo
rs or d
ust. T
hese m
oto
rs are no
t desig
ned
for atm
osp
heric co
nd
ition
s that
requ
ire explo
sion
pro
of o
peratio
n.
WA
RN
ING
:M
oto
rs that are to
be u
sed in
flamm
able an
d/o
r explo
sive atmo
sph
eres mu
st disp
lay the U
L lab
elo
n th
e nam
eplate alo
ng
with
CS
A listed
log
o. S
pecific service co
nd
ition
s for th
ese mo
tors are
defin
ed in
NF
PA 70 (N
EC
) Article 500.
WA
RN
ING
:G
uard
s mu
st be in
stalled fo
r rotatin
g p
arts such
as cou
plin
gs, p
ulleys, extern
al fans, an
d u
nu
sedsh
aft extensio
ns, sh
ou
ld b
e perm
anen
tly gu
arded
to p
revent accid
ental co
ntact b
y perso
nn
el.A
cciden
tal con
tact with
bo
dy p
arts or clo
thin
g can
cause serio
us o
r fatal inju
ry.C
autio
n:
To p
revent p
rematu
re equ
ipm
ent failu
re or d
amag
e, on
ly qu
alified m
ainten
ance p
erson
nel sh
ou
ldp
erform
main
tenan
ce.C
autio
n:
Do
no
t over ten
sion
belts. E
xcess tensio
n m
ay dam
age th
e mo
tor o
r driven
equ
ipm
ent.
Cau
tion
:D
o n
ot o
ver−lub
ricate mo
tor as th
is may cau
se prem
ature b
earing
failure.
Cau
tion
:D
o n
ot lift th
e mo
tor an
d its d
riven lo
ad b
y the m
oto
r lifting
hard
ware. T
he m
oto
r lifting
hard
ware
is adeq
uate fo
r lifting
on
ly the m
oto
r. Disco
nn
ect the lo
ad (g
ears, pu
mp
s, com
presso
rs, or o
ther
driven
equ
ipm
ent) fro
m th
e mo
tor sh
aft befo
re lifting
the m
oto
r.C
autio
n:
If eye bo
lts are used
for liftin
g a m
oto
r, be su
re they are secu
rely tigh
tened
. Th
e lifting
directio
nsh
ou
ld n
ot exceed
a 20° ang
le from
the sh
ank o
f the eye b
olt o
r lifting
lug
. Excessive liftin
gan
gles can
cause d
amag
e.C
autio
n:
To p
revent eq
uip
men
t dam
age, b
e sure th
at the electrical service is n
ot cap
able o
f deliverin
g m
ore
than
the m
aximu
m m
oto
r rated am
ps listed
on
the ratin
g p
late.C
autio
n:
If a HI P
OT
test (Hig
h P
oten
tial Insu
lation
test) mu
st be p
erform
ed, fo
llow
the p
recautio
ns an
dp
roced
ure in
NE
MA
MG
1 and
MG
2 stand
ards to
avoid
equ
ipm
ent d
amag
e.If you have any questions or are uncertain about any statem
ent or procedure, or if you require additionalinform
ation please contact your Baldor distributor or an A
uthorized Baldor S
ervice Center.
Receivin
gE
ach Baldor E
lectric Motor is thoroughly tested at the factory and carefully packaged for shipm
ent. When
you receive your motor, there are several things you should do im
mediately.
1.O
bserve the condition of the shipping container and report any damage im
mediately to the
comm
ercial carrier that delivered your motor.
2.V
erify that the part number of the m
otor you received is the same as the part num
ber listed on yourpurchase order.
Han
dlin
gT
he motor should be lifted using the lifting lugs or eye bolts provided.
Cau
tion
:D
o n
ot lift th
e mo
tor an
d its d
riven lo
ad b
y the m
oto
r lifting
hard
ware. T
he m
oto
r lifting
hard
ware
is adeq
uate fo
r lifting
on
ly the m
oto
r. Disco
nn
ect the lo
ad (g
ears, pu
mp
s, com
presso
rs, or o
ther
driven
equ
ipm
ent) fro
m th
e mo
tor sh
aft befo
re lifting
the m
oto
r.1.
Use the lugs or eye bolts provided to lift the m
otor. Never attem
pt to lift the motor and additional
equipment connected to the m
otor by this method. T
he lugs or eye bolts provided are designed to liftonly the m
otor. Never lift the m
otor by the motor shaft or the hood of a W
PII m
otor.2.
To avoid condensation inside the motor, do not unpack until the m
otor has reached room tem
perature.(R
oom tem
perature is the temperature of the room
in which it w
ill be installed). T
he packing provides insulation from tem
perature changes during transportation.3.
When lifting a W
PII (W
eather Proof Type 2) m
otor, do not lift the motor by inserting lifting lugs into
holes on top of the cooling hood. These lugs are to be used for hood rem
oval only. A
spreader bar should be used to lift the motor by the cast lifting lugs located on the m
otor frame.
Page 19 of 45
Product Information Packet: ECP844252T-4 - 250HP,3570RPM,3PH,60HZ,449TS,A44128M,TEF
General Inform
ation 1−3
MN
408
4.If the m
otor must be m
ounted to a plate with the driven equipm
ent such as pump, com
pressor etc., it m
ay not be possible to lift the motor alone. F
or this case, the assembly should be lifted by a sling
around the mounting base. T
he entire assembly can be lifted as an assem
bly for installation.D
o not lift the assembly using the m
otor lugs or eye bolts provided. Lugs or eye bolts are designed tolift m
otor only. If the load is unbalanced (as with couplings or additional attachm
ents) additional slingsor other m
eans must be used to prevent tipping. In any event, the load m
ust be secure before lifting.If the load is unbalanced (as w
ith couplings or additional attachments) additional slings or other
means m
ust be used to prevent tipping. In any event, the load must be secure before lifting.
Sto
rage
Storage requirem
ents for motors and generators that w
ill not be placed in service for at least six months
from date of shipm
ent.Im
proper motor storage w
ill result in seriously reduced reliability and failure. An electric m
otor that doesnot experience regular usage w
hile being exposed to normally hum
id atmospheric conditions is likely to
develop rust in the bearings or rust particles from surrounding surfaces m
ay contaminate the bearings.
The electrical insulation m
ay absorb an excessive amount of m
oisture leading to the motor w
indingfailure.A
wooden crate “shell” should be constructed to secure the m
otor during storage. This is sim
ilar to anexport box but the sides &
top must be secured to the w
ooden base with lag bolts (not nailed as export
boxes are) to allow opening and reclosing m
any times w
ithout damage to the “shell”.
Minim
um resistance of m
otor winding insulation is 5 M
eg ohms or the calculated m
inimum
, which ever is
greater. Minim
um resistance is calculated as follow
s: Rm
= kV + 1
where:
(Rm
is minim
um resistance to ground in M
eg−O
hms and
kV is rated nam
eplate voltage defined as Kilo−
Volts.)
Exam
ple:For a 480V
AC
rated motor R
m =
1.48 meg−
ohms (use 5 M
Ω).
For a 4160V
AC
rated motor R
m =
5.16 meg−
ohms.
Prep
aration
for S
torag
e1.
Som
e motors have a shipping brace attached to the shaft to prevent dam
age during transportation.T
he shipping brace, if provided, must be rem
oved and stored for future use. The brace m
ust bereinstalled to hold the shaft firm
ly in place against the bearing before the motor is m
oved.2.
Store in a clean, dry, protected w
arehouse where control is m
aintained as follows:
a.S
hock or vibration must not exceed 2 m
ils maxim
um at 60 hertz, to prevent the bearings from
brinelling. If shock or vibration exceeds this limit vibration isolation pads m
ust be used.b.
Storage tem
peratures of 10°C (50°F
) to 49°C (120°F
) must be m
aintained.c.
Relative hum
idity must not exceed 60%
.d.
Motor space heaters (w
hen present) are to be connected and energized whenever there is a
possibility that the storage ambient conditions w
ill reach the dew point. S
pace heaters are optional.N
ote: Rem
ove motor from
containers when heaters are energized, reprotect if necessary.
3.M
easure and record the resistance of the winding insulation (dielectric w
ithstand) every 30 days ofstorage.a.
If motor insulation resistance decreases below
the minim
um resistance, contact your B
aldorD
istrict office.b.
Place new
desiccant inside the vapor bag and re−seal by taping it closed.
c.If a zipper−
closing type bag is used instead of the heat−sealed type bag, zip the bag closed
instead of taping it. Be sure to place new
desiccant inside bag after each monthly inspection.
d.P
lace the shell over the motor and secure w
ith lag bolts.4.
Where m
otors are mounted to m
achinery, the mounting m
ust be such that the drains and breathersare fully operable and are at the low
est point of the motor. V
ertical motors m
ust be stored in thevertical position. S
torage environment m
ust be maintained as stated in step 2.
Page 20 of 45
Product Information Packet: ECP844252T-4 - 250HP,3570RPM,3PH,60HZ,449TS,A44128M,TEF
1−4 G
eneral Information
MN
408
5.M
otors with anti−
friction bearings are to be greased at the time of going into extended storage w
ithperiodic service as follow
s:a.
Motors m
arked “Do N
ot Lubricate” on the nameplate do not need to be greased before or during
storage.b.
Ball and roller bearing (anti−
friction) motor shafts are to be rotated m
anually every 3 months and
greased every 6 months in accordance w
ith the Maintenance section of this m
anual.c.
Sleeve bearing (oil lube) m
otors are drained of oil prior to shipment.
The oil reservoirs m
ust be refilled to the indicated level with the specified lubricant, (see
Maintenance). T
he shaft should be rotated monthly by hand at least 10 to 15 revolutions to
distribute oil to bearing surfaces.d.
“Provisions for oil m
ist lubrication” – These m
otors are packed with grease. S
torage proceduresare the sam
e as paragraph 5b.e.
“Oil M
ist Lubricated” – These bearings are protected for tem
porary storage by a corrosioninhibitor. If stored for greater than 3 m
onths or outdoor storage is anticipated, connected to the oilm
ist system w
hile in storage. If this is not possible, add the amount of grease indicated under
“Standard C
ondition” in Section 3, then rotate the shaft 15 tim
es by hand.6.
All breather drains are to be fully operable w
hile in storage (drain plugs removed). T
he motors m
ustbe stored so that the drain is at the low
est point. All breathers and autom
atic “T” drains m
ust beoperable to allow
breathing and draining at points other than through the bearings around the shaft. V
ertical motors should be stored in a safe stable vertical position.
7.C
oat all external machined surfaces w
ith a rust preventing material.
An acceptable product for this purpose is E
xxon Rust B
an # 392.8.
Carbon brushes should be lifted and held in place in the holders, above the com
mutator, by the brush
holder fingers. The com
mutator should be w
rapped with a suitable m
aterial such as cardboard paperas a m
echanical protection against damage.
No
n−R
egreaseab
le Mo
tors
Non−
regreasable motors w
ith “Do N
ot Lubricate” on the nameplate should have the m
otor shaft rotated15 tim
es to redistribute the grease within the bearing every 3 m
onths or more often.
All O
ther M
oto
r Types
Before storage, the follow
ing procedure must be perform
ed.1.
Rem
ove the grease drain plug, if supplied, (opposite the grease fitting) on the bottom of each bracket
prior to lubricating the motor.
2.T
he motor w
ith regreasable bearing must be greased as instructed in S
ection 3 of this manual.
3.R
eplace the grease drain plug after greasing.4.
The m
otor shaft must be rotated a m
inimum
of 15 times after greasing.
5.M
otor Shafts are to be rotated at least 15 revolutions m
anually every 3 months and additional grease
added every nine months (see S
ection 3) to each bearing.6.
Bearings are to be greased at the tim
e of removal from
storage.R
emo
val Fro
m S
torag
e1.
Rem
ove all packing material.
2.M
easure and record the electrical resistance of the winding insulation resistance m
eter at the time of
removal from
storage. The insulation resistance m
ust not be less than 50% from
the initial readingrecorded w
hen the motor w
as placed into storage. A decrease in resistance indicates m
oisture in thew
indings and necessitates electrical or mechanical drying before the m
otor can be placed intoservice. If resistance is low
, contact your Baldor D
istrict office.3.
Regrease the bearings as instructed in S
ection 3 of this manual.
4.R
einstall the original shipping brace if motor is to be m
oved. This w
ill hold the shaft firmly against the
bearing and prevent damage during m
ovement.
Page 21 of 45
Product Information Packet: ECP844252T-4 - 250HP,3570RPM,3PH,60HZ,449TS,A44128M,TEF
General Inform
ation 1−5
MN
408
Eq
uip
men
t Markin
g fo
r IEC
Certified
Pro
du
ctIE
C certified products have special m
arkings that identify the protection concept and environment
requirements. A
n example is show
n in Figure 3-1.
Fig
ure 3-1 IE
C C
ertified P
rod
uct M
arking
s
ExnA
MO
TO
R
MF
G. B
Y B
ALD
OR
ELE
CT
RIC
FO
RT
SM
ITH
, AR
72901 US
A
ExnA
IIC G
c Tam
b °C to °C
II 3 G IP
______S
ira__________________IE
CE
x__________________
Ex Protection Concept (ExnA)
Gas G
roup (IIC)
Temperature C
lass
ATEX Specific M
arking ofExplosion Protection
ATEX Equipment G
roup and Category (II3)
Type of Atmosphere: G
-Gas, D
-Dust (G
)
Ambient R
ange
European Conform
ity Mark
Place of Manufacture
Sp
ecific Co
nd
ition
s of U
se:If the m
otor certificate number is follow
ed by the symbol “X
”, this indicates that the motor has specific
conditions of use which are indicated on the certificate. It is necessary to review
the product certificationcertificate in conjunction w
ith this instruction manual.
Op
eration
On
Freq
uen
cy Co
nverters:
If the motor is evaluated for operation w
ith an adjustable speed drive, the type of converter (for example
PW
M for P
ulse Width M
odulated) and safe speed ranges (for example 0−
120Hz) w
ill be specified in thecertification docum
ents or on motor nam
eplates. It is necessary to consult the adjustable speed drivem
anual for proper set up.
Page 22 of 45
Product Information Packet: ECP844252T-4 - 250HP,3570RPM,3PH,60HZ,449TS,A44128M,TEF
1−6 G
eneral Information
MN
408
Page 23 of 45
Product Information Packet: ECP844252T-4 - 250HP,3570RPM,3PH,60HZ,449TS,A44128M,TEF
Sectio
n 2
Installatio
n &
Op
eration
Installation & O
peration 2−1
MN
408
Overview
Installation should conform to the N
ational Electrical C
ode as well as local codes and practices. W
henother devices are coupled to the m
otor shaft, be sure to install protective devices to prevent futureaccidents. S
ome protective devices include, coupling, belt guard, chain guard, shaft covers etc. T
heseprotect against accidental contact w
ith moving parts. M
achinery that is accessible to personnel shouldprovide further protection in the form
of guard rails, screening, warning signs etc.
Lo
cation
It is important that m
otors be installed in locations that are compatible w
ith motor enclosure and am
bientconditions. Im
proper selection of the motor enclosure and am
bient conditions can lead to reducedoperating life of the m
otor.P
roper ventilation for the motor m
ust be provided. Obstructed airflow
can lead to reduction of motor life.
1. O
pen
Drip
−Pro
of/W
PI m
otors are intended for use indoors where atm
osphere is relatively clean, dry,w
ell ventilated and non−corrosive.
2. To
tally En
closed
and
WP
II motors m
ay be installed where dirt, m
oisture or dust are present and inoutdoor locations.
Severe D
uty, IE
EE
841 and Washdow
n Duty enclosed m
otors are designed for installations with high
corrosion or excessive moisture conditions. T
hese motors should not be placed into an environm
entw
here there is the presence of flamm
able or combustible vapors, dust or any com
bustible material, unless
specifically designed for this type of service.H
azardo
us L
ocatio
ns are those w
here there is a risk of ignition or explosion due to the presence ofcom
bustible gases, vapors, dust, fibers, or flyings. Facilities requiring special equipm
ent for hazardouslocations are typically classified in accordance w
ith local requirements. In the U
S m
arket, guidance isprovided by the N
ational Electric C
ode.M
ou
ntin
gL
ocatio
nT
he motor should be installed in a location com
patible with the m
otor enclosure and specific ambient. To
allow adequate air flow
, the following clearances m
ust be maintained betw
een the motor and any
obstruction:Tab
le 2−1 En
closu
re Clearan
ceT
EF
C / T
EN
V ( IC
0141 ) En
closu
resF
an Cover A
ir Intake180 −
210T F
rame 1″
〈 25mm
)F
an Cover A
ir Intake250 −
449T F
rame 4″
〈 100mm
)IE
C 112 −
132 1″〈 25m
m)
IEC
160 − 280 4″
〈 100mm
)E
xhaustE
nvelope equal to the P D
imension on the m
otordim
ension sheetO
PE
N/P
rotected
En
closu
resB
racket IntakeS
ame as T
EF
CF
rame E
xhaustE
xhaust out the sides envelopeA
minim
um of the P
dimension plus 2″ (50m
m)
Exhaust out the end sam
e as intake.
The m
otor must be securely installed to a rigid foundation or m
ounting surface to minim
ize vibration andm
aintain alignment betw
een the motor and shaft load. F
ailure to provide a proper mounting surface m
aycause vibration, m
isalignment and bearing dam
age.F
oundation caps and sole plates are designed to act as spacers for the equipment they support. If these
devices are used, be sure that they are evenly supported by the foundation or mounting surface.
When installation is com
plete and accurate alignment of the m
otor and load is accomplished, the base
should be grouted to the foundation to maintain this alignm
ent.T
he standard motor base is designed for horizontal or vertical m
ounting. Adjustable or sliding rails are
designed for horizontal mounting only. C
onsult your Baldor distributor or authorized B
aldor Service C
enterfor further inform
ation.
Page 24 of 45
Product Information Packet: ECP844252T-4 - 250HP,3570RPM,3PH,60HZ,449TS,A44128M,TEF
2−2 Installation &
Operation
MN
408
Fram
e Mo
un
ting
Ho
lesS
ome m
otors have standardized frames containing 6 or 8 m
ounting holes. 6 hole frames are not suitable
for field reversal of mounting from
F−
1 to F−
2, etc. Figure 2-2 indicates the proper m
ounting holes to use.F
igu
re 2-2 6 & 8 H
ole M
oto
r Fram
e Mo
un
ting
Top View
Allows F-1 to F-2 C
onversion on 8 holefram
es.N
ot present on 6 hole frames.
Not used on 8 hole fram
es.
Shaft
Always use these holes, closer to the
shaft 112S, 132S, 160M, 180M
,200M
, 225S, 250S, 280S, (IEC)
For short frame designations 182, 213,
254, 284, 324, 364, 404, 444 (NEM
A)
For long frame designations 184, 215,
256, 286, 326, 365, 405, 445 (NEM
A)(IEC
) 112M, 132M
, 160L, 200L, 225M,
250M, 280M
Cau
tion
:D
o n
ot lift th
e mo
tor an
d its d
riven lo
ad b
y the m
oto
r lifting
hard
ware. T
he m
oto
r lifting
hard
ware
is adeq
uate fo
r lifting
on
ly the m
oto
r. Disco
nn
ect the lo
ad (g
ears, pu
mp
s, com
presso
rs, or o
ther
driven
equ
ipm
ent) fro
m th
e mo
tor sh
aft befo
re lifting
the m
oto
r.In the case of assem
blies on a comm
on base, any lifting means provided on the m
otor should not beused to lift the assem
bly and base but, rather, the assembly should be lifted by a sling around the base or
by other lifting means provided on the base. A
ssure lifting in the direction intended in the design of thelifting m
eans. Likewise, precautions should be taken to prevent hazardous overloads due to deceleration,
acceleration or shock forces.A
lign
men
tA
ccurate alignment of the m
otor with the driven equipm
ent is extremely im
portant. The pulley, sprocket,
or gear used in the drive should be located on the shaft as close to the shaft shoulder as possible. It isrecom
mended to heat the pulley, sprocket, or gear before installing on the m
otor shaft. Forcibly driving a
unit on the motor shaft w
ill damage the bearings.
1.D
irect Co
up
ling
For direct drive, use flexible couplings if possible. C
onsult the drive or equipment m
anufacturer form
ore information. M
echanical vibration and roughness during operation may indicate poor alignm
ent.U
se dial indicators to check alignment. T
he space between coupling hubs should be m
aintained asrecom
mended by the coupling m
anufacturer.2.
En
d-P
lay Ad
justm
ent
The axial position of the m
otor frame w
ith respect to its load is also extremely im
portant. The standard
motor bearings are not designed for excessive external axial thrust loads. Im
proper adjustment w
illcause failure.
3.P
ulley R
atioT
he best practice is to not exceed an 8:1 pulley ratio.C
autio
n:
Do
no
t over ten
sion
belts. E
xcess tensio
n m
ay dam
age th
e mo
tor o
r driven
equ
ipm
ent.
4.B
elt Drive
Align sheaves carefully to m
inimize belt w
ear and axial bearing loads (see End-P
lay Adjustm
ent). Belt
tension should be sufficient to prevent belt slippage at rated speed and load. How
ever, belt slippagem
ay occur during starting.
Page 25 of 45
Product Information Packet: ECP844252T-4 - 250HP,3570RPM,3PH,60HZ,449TS,A44128M,TEF
Installation & O
peration 2−3
MN
408
Do
welin
g &
Bo
lting
After proper alignm
ent is verified, dowel pins should be inserted through the m
otor feet into thefoundation. T
his will m
aintain the correct motor position should m
otor removal be required.
(Baldor
�Reliance m
otors are designed for doweling.)
1.D
rill dowel holes in diagonally opposite m
otor feet in the locations provided.2.
Drill corresponding holes in the foundation.
3.R
eam all holes.
4.Install proper fitting dow
els.5.
Mounting bolts m
ust be carefully tightened to prevent changes in alignment.
Use a flat w
asher and lock washer under each nut or bolt head to hold the m
otor feet secure. F
langed nuts or bolts may be used as an alternative to w
ashers.W
AR
NIN
G:
Gu
ards m
ust b
e installed
for ro
tating
parts su
ch as co
up
ling
s, pu
lleys, external fan
s, and
un
used
shaft exten
sion
s, sho
uld
be p
erman
ently g
uard
ed to
preven
t acciden
tal con
tact by p
erson
nel.
Accid
ental co
ntact w
ith b
od
y parts o
r cloth
ing
can cau
se seriou
s or fatal in
jury.
Gu
ardin
gG
uards must be installed for rotating parts such as couplings, pulleys, external fans, and unused shaft
extensions. This is particularly im
portant where the parts have surface irregularities such as keys, key
ways or set screw
s. Som
e satisfactory methods of guarding are:
1. C
overing the machine and associated rotating parts w
ith structural or decorative parts of the drivenequipm
ent.2.
Providing covers for the rotating parts. C
overs should be sufficiently rigid to maintain adequate
guarding during normal service.
Po
wer C
on
nectio
nM
otor and control wiring, overload protection, disconnects, accessories and grounding should
conform to the N
ational Electrical C
ode and local codes and practices.F
or ExnA
hazardous location motors, it is a specific condition of use that all term
inations in a conduit boxbe fully insulated. F
lying leads must be insulated w
ith two full w
raps of electrical grade insulating tape orheat shrink tubing.
Gro
un
din
gIn the U
SA
consult the National E
lectrical Code, A
rticle 430 for information on grounding of m
otors andgenerators, and A
rticle 250 for general information on grounding. In m
aking the ground connection, theinstaller should m
ake certain that there is a solid and permanent m
etallic connection between the ground
point, the motor or generator term
inal housing, and the motor or generator fram
e. In non−U
SA
locationsconsult the appropriate national or local code applicable.
Motors w
ith resilient cushion rings usually must be provided w
ith a bonding conductor across the resilientm
ember. S
ome m
otors are supplied with the bonding conductor on the concealed side of the cushion ring
to protect the bond from dam
age. Motors w
ith bonded cushion rings should usually be grounded at thetim
e of installation in accordance with the above recom
mendations for m
aking ground connections. When
motors w
ith bonded cushion rings are used in multim
otor installations employing group fusing or group
protection, the bonding of the cushion ring should be checked to determine that it is adequate for the
rating of the branch circuit over current protective device being used.T
here are applications where grounding the exterior parts of a m
otor or generator may result in greater
hazard by increasing the possibility of a person in the area simultaneously contacting ground and som
eother nearby live electrical parts of other ungrounded electrical equipm
ent. In portable equipment it is
difficult to be sure that a positive ground connection is maintained as the equipm
ent is moved, and
providing a grounding conductor may lead to a false sense of security.
Select a m
otor starter and over current protection suitable for this motor and its application. C
onsult motor
starter application data as well as the N
ational Electric C
ode and/or other applicable local codes.F
or motors installed in com
pliance with IE
C requirem
ents, the following m
inimum
cross sectional area ofthe protective conductors should be used:
Crosssectional area of phase
conductors, SM
inimum
crosssectional area of the corresponding protective conductor, S
pm
m2
mm
2
S< 16S
16 < S � 35
16S>35
0,5 SE
quipotential bonding connection shall made using a conductor w
ith a cross-sectional area of at least 4 m
m2.
Page 26 of 45
Product Information Packet: ECP844252T-4 - 250HP,3570RPM,3PH,60HZ,449TS,A44128M,TEF
2−4 Installation &
Operation
MN
408
Co
nd
uit B
ox F
or ease of making connections, an oversize conduit box is provided. M
ost conduit boxes can berotated 360° in 90° increm
ents. Auxiliary conduit boxes are provided on som
e motors for accessories
such as space heaters, RT
D’s etc.
AC
Po
wer
Motors w
ith flying lead construction must be properly term
inated and insulated.C
onnect the motor leads as show
n on the connection diagram located on the nam
e plate or inside thecover on the conduit box. B
e sure the following guidelines are m
et:1.
AC
power is w
ithin ±10% of rated voltage w
ith rated frequency. (See m
otor name plate for ratings).
OR
2.A
C pow
er is within ±5%
of rated frequency with rated voltage.
OR
3.A
combined variation in voltage and frequency of ±10%
(sum of absolute values) of rated values,
provided the frequency variation does not exceed ±5% of rated frequency.
Perform
ance within these voltage and frequency variations are show
n in Figure 2-4.
Fig
ure 2-3 A
ccessory C
on
nectio
ns
One heater is installed in each end of m
otor. Leads for each heater are labeled H
1 & H
2. (Like num
bers should be tied together).
Three therm
istors are installed in windings and tied in series.
Leads are labeled TD
1 & T
D2.
Winding R
TD
s are installed in windings (2) per phase.
Each set of leads is labeled 1TD
1, 1TD2, 1TD
3, 2TD1, 2TD
2, 2TD3 etc.
* One bearing R
TD
is installed in Drive endplate (P
UE
P), leads
are labeled RT
DD
E.
* One bearing R
TD
is installed in Opposite D
rive endplate (FR
EP
), leads are labeled R
TD
OD
E.
* Note R
TD
may have 2−
Red/1−
White leads; or 2−
White/1−
Red Lead.
TD1
TD2
Ro
tation
All three phase m
otors are reversible. To reverse the direction of rotation, disconnect and lock out power
and interchange any two of the three line leads for three phase m
otors. For single phase m
otors, checkthe connection diagram
to determine if the m
otor is reversible and follow the connection instructions for
lead numbers to be interchanged. N
ot all single phase motors are reversible.
Adjustable F
requency Pow
er Inverters used to supply adjustable frequency power to induction m
otorsproduce w
ave forms w
ith lower order harm
onics with voltage spikes superim
posed. Turn−to−
turn,phase−
to−phase, and ground insulation of stator w
indings are subject to the resulting dielectric stresses.S
uitable precautions should be taken in the design of these drive systems to m
inimize the m
agnitude ofthese voltage spikes. C
onsult the drive instructions for maxim
um acceptable m
otor lead lengths, andproper grounding.
Page 27 of 45
Product Information Packet: ECP844252T-4 - 250HP,3570RPM,3PH,60HZ,449TS,A44128M,TEF
Installation & O
peration 2−5
MN
408
Note:
Main pow
er leads for CE
Marked M
otors may be m
arked U,V,W
– for standard configurations, please consult connection diagram
s.
Co
nn
ection
Diag
rams
Page 28 of 45
Product Information Packet: ECP844252T-4 - 250HP,3570RPM,3PH,60HZ,449TS,A44128M,TEF
2−6 Installation &
Operation
MN
408
Co
nn
ection
Diag
rams C
ontinued
Page 29 of 45
Product Information Packet: ECP844252T-4 - 250HP,3570RPM,3PH,60HZ,449TS,A44128M,TEF
Installation & O
peration 2−7
MN
408
Fig
ure 2-4 Typ
ical Mo
tor P
erform
ance V
S Vo
ltage V
ariation
s+
20
+15
+10+50
−5
−10
−15
−20
−15
−10
−5
0+
5+
10+
15
Voltag
e Variatio
ns (%
)
Changes in Motor Performance (%)F
ull -LoadC
urrent
Full -LoadC
urrentP
ower
Factor
Pow
erF
actor
Efficiency
Efficiency
Maxim
umTorque
Maxim
umTorque
Initial L
ub
rication
Baldor
�Reliance m
otors are shipped from the factory w
ith the bearings properly packed with grease
and ready to operate. Where the unit has been subjected to extended storage (6 m
onths or more) the
bearings should be relubricated (regreasable type) prior to starting. When m
otors are equipped for oil mist
lubrication refer to the instruction manual for installation, operation, and m
aintenance of oil mist lubrication
systems.
First Tim
e Start U
pB
e sure that all power to m
otor and accessories is off. Be sure the m
otor shaft is disconnected fromthe load and w
ill not cause mechanical rotation of the m
otor shaft.1.
Make sure that the m
echanical installation is secure. All bolts and nuts are tightened etc.
2.If m
otor has been in storage or idle for some tim
e, check winding insulation integrity.
3.Inspect all electrical connections for proper term
ination, clearance, mechanical strength and electrical
continuity.4.
Be sure all shipping m
aterials and braces (if used) are removed from
motor shaft.
5.M
anually rotate the motor shaft to ensure that it rotates freely.
6.R
eplace all panels and covers that were rem
oved during installation.7.
Mom
entarily apply power and check the direction of rotation of the m
otor shaft.8.
If motor rotation is w
rong, be sure power is off and change the m
otor lead connections. V
erify rotation direction before you continue.9.
Start the m
otor and ensure operation is smooth w
ithout excessive vibration or noise. If so, run the m
otor for 1 hour with no load connected.
10.A
fter 1 hour of operation, disconnect power and connect the load to the m
otor shaft. V
erify all coupling guards and protective devices are installed. Ensure m
otor is properly ventilated.11.
If motor is totally enclosed fan−
cooled or non−ventilated it is recom
mended that condensation drain
plugs, if present, be removed. T
hese are located in the lower portion of the end−
shields. Totally enclosed fan−
cooled “XT
” motors are norm
ally equipped with autom
atic drains which m
ay beleft in place as received.
Page 30 of 45
Product Information Packet: ECP844252T-4 - 250HP,3570RPM,3PH,60HZ,449TS,A44128M,TEF
2−8 Installation &
Operation
MN
408
Co
up
led S
tart Up
This procedure assum
es a coupled start up. Also, that the first tim
e start up procedure was successful.
1.C
heck the coupling and ensure that all guards and protective devices are installed.2.
Check that the coupling is properly aligned and not binding.
3.T
he first coupled start up should be with no load. A
pply power and verify that the load is not
transmitting excessive vibration back to the m
otor though the coupling or the foundation. Vibration
should be at an acceptable level.4.
Run for approxim
ately 1 hour with the driven equipm
ent in an unloaded condition.T
he equipment can now
be loaded and operated within specified lim
its. Do not exceed the nam
e plateratings for am
peres for steady continuous loads.Jo
gg
ing
and
Rep
eated S
tarts Repeated starts and/or jogs of induction m
otors generally reduce the life of the motor
winding insulation. A
much greater am
ount of heat is produced by each acceleration or jog than by thesam
e motor under full load. If it is necessary to repeatedly start or jog the m
otor, it is advisable to checkthe application w
ith your local Baldor distributor or B
aldor Service C
enter.H
eating
- Duty rating and m
aximum
ambient tem
perature are stated on the motor nam
e plate. D
o not exceed these values. If there is any question regarding safe operation, contact your local Baldor
distributor or Baldor S
ervice Center.
Hazard
ou
s Lo
cation
sH
azardous locations are those where there is a risk of ignition or explosion due to the presence of
combustible gases, vapors, dust, fibers or flyings.
Selectio
nF
acilities requiring special equipment for hazardous locations are typically classified in accordance w
ithlocal requirem
ents. In the US
market, guidance is provided by the N
ational Electric C
ode. Ininternational hazardous location areas, guidance for gas / vapor / m
ist classification is given inIE
C60079−
14, or for dust in IEC
61241−14. T
his classification process lets the installer know w
hatequipm
ent is suitable for installation in that environment, and identifies w
hat the maxim
um safe
temperature or tem
perature class is required. It is the customer or users responsibility to determ
ine thearea classification and select proper equipm
ent.A
reas are classified with respect to risk and exposure to the hazard. In the U
S m
arket, areas aretypically classified as follow
s Class, D
ivision, Group and Tem
perature Class. In som
e newer installations
in the US
and in most international m
arkets, areas are classified in Zones.
Pro
tection
Co
ncep
tsC
lass I Divisio
n 1 / Z
on
e 1 [Eq
uip
men
t Gro
up
I (min
ing
) or II (su
rface), Eq
uip
men
t Pro
tection
Level
(EP
L) G
b, M
b ]
Baldor offers a range of m
otors suitable for installation in a Division 1 or Z
one 1 environment. T
hesem
otors are known as explosion proof or flam
eproof. (Insert flameproof m
otor cut away draw
ing)M
otors that are explosion proof or flameproof use specially m
achined flameproof joints betw
een the endbell or bracket and the fram
e, as well as along the rotating shaft and at connection box covers and
entries. The fit of these flam
eproof joints are designed to contain the combustion or quench the flam
e ofan explosive gas atm
osphere prior to it exiting the motor. T
hese flameproof joints have lengths and
widths selected and tested based on the gas group present in the atm
osphere. Baldor
�Reliance m
otorsare typically designed to m
eet Class I (D
ivision 1) Group C
and D (explosion proof) or E
x d IIB(flam
eproof).A
n application note regarding equipment applied in accordance w
ith the US
National E
lectric Code (N
FP
A70−
2008) − according to A
rticle 500.8(C) M
arking, sub clause (2) in the fine print note, it is noted thatE
quipment not m
arked to indicate a division is suitable for both Division 1 and D
ivision 2 locations. These
motors are not gas tight. To the contrary, this protection concept assum
es that due to the normal heating
and cooling cycle of motor operation that any gas present w
ill be drawn into the m
otor. Since flam
eproofor explosion proof m
otors are designed to contain the combustion and extinguish any flam
e transmission,
for this protection concept, only external surface temperatures are of concern. T
hermal lim
iting devicessuch as therm
ostats, thermistors or R
TD
s may be provided on these m
otors to limit the external surface
temperature during overload conditions.
Page 31 of 45
Product Information Packet: ECP844252T-4 - 250HP,3570RPM,3PH,60HZ,449TS,A44128M,TEF
Installation & O
peration 2−9
MN
408
If thermostats are provided as a condition of certification, it is the installer’s responsibility to m
ake surethat these devices are properly connected to a suitable sw
itching device. The A
TE
X directive requires
that motor shutdow
n on thermal trip be accom
plished without an interm
ediate software com
mand.
Flam
eproof motors, internationally referred to as E
x d use a protection concept similar to that used in
Class I D
ivision 1 motors, w
ith minor differences in the flam
eproof joints and cable entry designs.F
lameproof and explosion proof m
otors are both type tested. Representative m
otors are connected to areference gas and ignited in laboratory conditions to verify that the flam
e is not transmitted outside the
motor enclosure and to determ
ine the maxim
um internal pressure encountered.
Explosion proof and F
lame proof m
otors shipped without a conduit box require use of a certified box of
suitable dimensions and that is appropriate for the classification.
Class I D
ivision
2 / Zo
ne 2 E
x nA
, [Eq
uip
men
t Pro
tection
Level (E
PL
) Gc ]
This protection concept relies on having no sources of ignition present such as arcing parts or hot
surfaces. For this protection concept, internal tem
peratures as well as external tem
peratures areconsidered. In m
any cases, the internal temperatures are higher than the external tem
peratures andtherefore becom
e the limiting factor in determ
ination of temperature code designation. In these
applications, it is very important to use a m
otor that has been evaluated thermally for use w
ith an inverteror converter, if variable speed operation is desired. T
hermostats used for C
lass I Division 2 and E
x nAm
otors are used to protect the motor only. F
or motors using flying lead construction, it is im
portant to useconnection lugs and insulate w
ith heat shrink tubing or a double wrap of insulation grade electrical tape to
avoid the risk of spark or ignition.C
lass II Divisio
n 1 / Z
on
e 21 [Eq
uip
men
t Gro
up
III, Eq
uip
men
t Pro
tection
Level (E
PL
) Db
]T
his area classification is one where the risk of ignitable concentrations of dust is present at all or som
e ofthe tim
e. The protection concepts used for C
lass II Division 1 is sim
ilar to flamepath, except w
ithadditional dust exclusion paths designed for the rotating shaft. In the international designations, thisconcept is referred to as dust ignition proof or E
x tD. E
xternal surface temperature rem
ains the limiting
factor. Therm
al limiting devices such as therm
ostats, thermistors or R
TD
s may be provided on these
motors to lim
it the external surface temperature during overload conditions. If therm
ostats are providedas a condition of certification, it is the installer’s responsibility to m
ake sure that these devices areproperly connected to a suitable sw
itching device.N
ote:In the N
orth Am
erican area classification system, C
lass III exists for fibers and flyings. In the IE
C designation, both dusts and flyings are absorbed into G
roup III.C
lass II Divisio
n 2 / Z
on
e 22 [Eq
uip
men
t Gro
up
III, Eq
uip
men
t Pro
tection
Level (E
PL
) Dc ]
This area classification is one w
here the risk of exposure to ignitable concentrations of dust are not likelyto occur under norm
al operating conditions and relies heavily on the housekeeping practices within the
installation.S
ine W
ave Po
wer O
peratio
n fo
r Divisio
n 1 o
r 2 and
Zo
ne 1 o
r 2 and
Zo
ne 21 o
r 22 Hazard
ou
sL
ocatio
n.
These m
otors are designed to operate at or below the m
aximum
surface temperature (or T
−C
ode) statedon the nam
eplate. Failure to operate the m
otor properly can cause this maxim
um surface tem
perature tobe exceeded. If applied in a D
ivision 1 or 2 / Zone 1 or 2 and Z
one 21 or 22 environment, this excessive
temperature m
ay cause ignition of hazardous materials. O
perating the motor at any of the follow
ingconditions can cause the m
arked surface temperature to be exceeded.
1.M
otor load exceeding service factor nameplate value
2.A
mbient tem
peratures above nameplate value
3.V
oltages above or below nam
eplate value4.
Unbalanced voltages
5.Loss of proper ventilation
6.A
ltitude above 3300 feet / 1000 meters
7.S
evere duty cycles of repeated starts8.
Motor stall
9.M
otor reversing10.
Single phase operation of polyphase equipm
ent11.
Variable frequency operation
Variab
le Freq
uen
cy Po
wer O
peratio
n fo
r Divisio
n 1 o
r 2 and
Zo
ne 1 o
r 2 and
Zo
ne 21 o
r 22H
azardo
us L
ocatio
n (m
otors with m
aximum
surface temperature listed on the nam
eplate).O
nly motors w
ith nameplates m
arked for use on inverter (variable frequency) power, and labeled for
specific hazardous areas may be used in those hazardous areas on inverter pow
er. The m
otor isdesigned to operate at or below
the maxim
um surface tem
perature (or T−
Code) stated on the nam
eplate.F
ailure to operate the motor properly can cause this m
aximum
surface temperature to be exceeded.
Page 32 of 45
Product Information Packet: ECP844252T-4 - 250HP,3570RPM,3PH,60HZ,449TS,A44128M,TEF
2−10 Installation &
Operation
MN
408
If applied in a Division 1 or 2 / Z
one 1 or 2 and Zone 21 or 22 environm
ent, this excessive temperature
may cause ignition of hazardous m
aterials. Operating the m
otor at any of the following conditions can
cause the marked surface tem
perature to be exceeded.1.
Motor load exceeding service factor nam
eplate value2.
Am
bient temperature above nam
eplate value3.
Voltage (at each operating frequency) above or below
rated nameplate value
4.U
nbalanced voltages5.
Loss of proper ventilation6.
Operation outside of the nam
eplate speed / frequency range7.
Altitudes above 3300 feet / 1000 m
eters8.
Single phase operation of polyphase equipm
ent9.
Unstable current w
ave forms
10.Low
er than name plate m
inimum
carrier frequencyT
herm
al Lim
iting
T
hermal lim
iting devices are temperature sensing control com
ponents installed inside the motor to lim
itthe internal tem
perature of the motor fram